inner honeycomb foam made from a special elastomeric compound this light and flexible impact foam absorbs transferred energy Slips in to your jackets back protector pocket to give you high levels of protection on the street without hindering riding comfort Outer honeycomb plate made of polypropylene provides an outer structure to protect the back from penetrating injuries as well as dissipating impact force over a wider area Ce certified level 1 to the latest back protector standard pre